AT213482B -
Positioner with variable impedance, especially for switching purposes in telecommunications, remote control, telemetry systems and. like
- Google Patents
Positioner with variable impedance, especially for switching purposes in telecommunications, remote control, telemetry systems and. like
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Publication number
AT213482B
AT213482BAT209859AAT209859AAT213482BAT 213482 BAT213482 BAT 213482BAT 209859 AAT209859 AAT 209859AAT 209859 AAT209859 AAT 209859AAT 213482 BAT213482 BAT 213482B
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Application filed by Siemens Spa ItalianafiledCriticalSiemens Spa Italiana
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Publication of AT213482BpublicationCriticalpatent/AT213482B/en
AT209859A1953-03-181959-03-17
Positioner with variable impedance, especially for switching purposes in telecommunications, remote control, telemetry systems and. like
AT213482B
(en)
Automatically controlled two-way amplifier, preferably for telephone systems with loudspeaker telephones, such as executive telephone systems and the like. like
Circuit arrangement for receiving a switch indicator consisting of an alternating current pulse, in particular for telephone systems, remote control systems and the like. like